2HMQ

THE STRUCTURES OF MET AND AZIDOMET HEMERYTHRIN AT 1.66 ANGSTROMS RESOLUTION


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.66 Å
  • R-Value Observed: 0.189 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structures of met and azidomet hemerythrin at 1.66 A resolution.

Holmes, M.A.Stenkamp, R.E.

(1991) J Mol Biol 220: 723-737

  • DOI: 10.1016/0022-2836(91)90113-k
  • Primary Citation of Related Structures:  
    2HMQ, 2HMZ

  • PubMed Abstract: 
  • The crystallographic refinement of met and azidomet hemerythrin has been carried out at 1.66 A resolution in an attempt to characterize precisely the binuclear iron center in this protein. Restrained least-squares refinement has produced molecular models giving R-values of 18 ...

    The crystallographic refinement of met and azidomet hemerythrin has been carried out at 1.66 A resolution in an attempt to characterize precisely the binuclear iron center in this protein. Restrained least-squares refinement has produced molecular models giving R-values of 18.9% for met (65,683 reflections from 10 A to 1.66 A) and 17.6% for azidomet hemerythrin (68,747 reflections from 10.0 A to 1.66 A). The protein structure in each derivative is very similar to that of myohemerythrin. The mu-oxo bridged iron center differs between the two forms. The complex in met hemerythrin is asymmetric with the bridging oxygen closer to one of the iron atoms while the complex in azidomet hemerythrin is symmetric. After investigations of the effects of correlation in the refinement, we believe this difference between the two complexes is associated with chemical differences and is not a refinement artefact.


    Related Citations: 
    • Active Site Structures of Deoxyhemerythrin and Oxyhemerythrin
      Stenkamp, R.E., Sieker, L.C., Jensen, L.H., Mccallum, J.D., Sanders-Loehr, L.
      (1985) Proc Natl Acad Sci U S A 82: 713
    • Binuclear Iron Complexes in Methemerythrin and Azidomethemerythrin at 2.0-Angstroms Resolution
      Stenkamp, R.E., Sieker, L.C., Jensen, L.H.
      (1984) J Am Chem Soc 106: 618
    • Adjustment of Restraints in the Refinement of Methemerythrin and Azidomethemerythrin at 2.0 Angstroms Resolution
      Stenkamp, R.E., Sieker, L.C., Jensen, L.H.
      (1983) Acta Crystallogr B 39: 697
    • Restrained Least-Squares Refinement of Themiste Dyscritum Methydroxohemerythrin at 2.0 Angstroms Resolution
      Stenkamp, R.E., Sieker, L.C., Jensen, L.H.
      (1982) Acta Crystallogr B 38: 784
    • Structure of the Binuclear Iron Complex in Metazidohaemerythrin from Themiste Dyscritum at 2.2 Angstroms Resolution
      Stenkamp, R.E., Sieker, L.C., Jensen, L.H., Sanders-Loehr, J.
      (1981) Nature 291: 263
    • Crystallographic Studies of Azide, Thiocyanate and Perchlorate Complexes of Methemerythrin
      Stenkamp, R.E., Sieker, L.C., Jensen, L.H.
      (1978) J Mol Biol 126: 457
    • Structure of Methemerythrin at 2.8-Angstroms Resolution. Computer Graphics Fit of an Averaged Electron Density Map
      Stenkamp, R.E., Sieker, L.C., Jensen, L.H., Mcqueenjunior, J.E.
      (1978) Biochemistry 17: 2499
    • Amino Acid Sequence of Hemerythrin from Themiste Dyscritum
      Loehr, J.S., Lammers, P.J., Brimhall, B., Hermodson, M.A.
      (1978) J Biol Chem 253: 5726
    • Structure of the Iron Complex in Methemerythrin
      Stenkamp, R.E., Sieker, L.C., Jensen, L.H.
      (1976) Proc Natl Acad Sci U S A 73: 349
    • Structure of Methemerythrin at 5 Angstroms Resolution
      Stenkamp, R.E., Sieker, L.C., Jensen, L.H., Loehr, J.S.
      (1976) J Mol Biol 100: 23
    • An X-Ray Crystallographic Study of Hemerythrin
      Loehr, J.S., Meyerhoff, K.N., Sieker, L.C., Jensen, L.H.
      (1975) J Mol Biol 91: 521

    Organizational Affiliation

    Department of Biological Structure, University of Washington, Seattle 98195.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
HEMERYTHRINA, B, C, D113Themiste dyscritumMutation(s): 1 
UniProt
Find proteins for P02246 (Themiste dyscrita)
Explore P02246 
Go to UniProtKB:  P02246
Protein Feature View
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.66 Å
  • R-Value Observed: 0.189 
  • Space Group: P 4
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 86.6α = 90
b = 86.6β = 90
c = 80.8γ = 90
Software Package:
Software NamePurpose
PROFFTrefinement

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1992-01-15
    Type: Initial release
  • Version 1.1: 2008-03-03
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Derived calculations, Version format compliance